/*
 * Copyright (C) 2019 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#import "FilamentView.h"
@implementation FilamentView
 
- (instancetype)initWithFrame:(CGRect)frame
				 drawableSize:(CGSize)drawableSize{
    self = [super initWithFrame:frame];
    if (self = [super initWithFrame:frame]) {
		_drawableSize = drawableSize;
        [self initializeMetalLayerWithDrawableSize:drawableSize];
    }
    return self;
}

- (instancetype)initWithFrame:(CGRect)frame{
	self = [super initWithFrame:frame];
	if (self) {
		_pixelFormat = MTLPixelFormatBGRA8Unorm;
		CGFloat scale = UIScreen.mainScreen.scale;
		_drawableSize = CGSizeMake(frame.size.width * scale, frame.size.height * scale);
		[self initializeMetalLayerWithDrawableSize:_drawableSize];
	}
	return self;
}

- (void)initializeMetalLayerWithDrawableSize:(CGSize)drawableSize{
    CAMetalLayer* metalLayer = (CAMetalLayer*) self.layer;
	metalLayer.pixelFormat = MTLPixelFormatBGRA8Unorm;
	metalLayer.drawableSize = drawableSize;
	metalLayer.opaque = YES;
}

 

- (void)setDrawableSize:(CGSize)drawableSize{
    _drawableSize = drawableSize;
    CAMetalLayer* metalLayer = (CAMetalLayer*) self.layer;
	metalLayer.drawableSize = drawableSize;
}

+ (Class) layerClass{
    return [CAMetalLayer class];
}

@end
